Serial Ports and Cables
GFK-0356Q Appendix A Serial Ports and Cables A-5
A
Table A-3. Workmaster RS-232 Serial Port Pins-out
Workmaster II (25-pin connector) Workmaster (9-pin connector)
Pin No. Signal Description Pin No. Signal Description
1 NC 1 NC
2 TD Transmit Data 2 TD Transmit Data
3 RD Receive Data 3 RD Receive Data
4 RTS Request to Send 4 RTS Request to Send
5 CTS Clear to Send 5 CTS Clear to Send
6NC 6NC
7 GND Signal Ground 7 GND Signal Ground, 0V
8 DCD Data Carrier Detect 8 DCD Data Carrier Detect
9,10 NC 9 DTR Data Terminal Ready
11 Tied to line 20 NC = Not Connected
12–19NC
20 DTR Data Terminal Ready
21 NC
22 Ring Indicate
23–25 NC
For more information about the Workmaster industrial computer serial port refer to the following
manuals:
GFK-0401 Workmaster II PLC Programming Unit Guide to Operation
GEK-25373 Workmaster Programmable Control Information Center Guide to Operation
IBM-AT/XT Serial Port
The IBM-AT, IBM-XT or compatible computer’s RS-232 serial port is a 9-pin D-type male
connector as shown in the figure below.
9
PIN
1
5
6
a44523
IBM-AT/XT
Figure A-3. IBM-AT/XT Serial Port
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